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Energy and exergy analyses of malt drink production in Nigeria

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Listed:
  • Fadare, D.A.
  • Nkpubre, D.O.
  • Oni, A.O.
  • Falana, A.
  • Waheed, M.A.
  • Bamiro, O.A.

Abstract

Energy requirements and exergy inefficiencies for processing of malt drink were estimated for a Nigerian brewery. The process was divided into twenty-one basic unit operations and grouped into four main group operations: silo house, brew house, filter room and packaging house. The energy intensity for processing a batch of 9.8 tonnes brew grains to 562hl of malt drink was estimated as 261.63MJ/hl consisting of electrical (41.01%), thermal (58.81%) and manual (0.19%) of the total energy. The most energy intensive group operation was the Packaging House operation, followed by the Brew House operation with energy intensities of 223.19 and 35.94MJ/hl, respectively. The exergy analysis revealed that the packaging house operation was responsible for most of the inefficiency (92.16%) followed by brew house operation (7.17%) and the silo house and filter room operations with less than 1% of the total exergy lost. The most exergy loss took place in the pasteurizer, which accounted for 59.75% of the overall system inefficiency. Modification in the pasteurizer and use of spent grains as alternate source of energy in the steam boiler were recommended to improve the energy efficiency of the system.

Suggested Citation

  • Fadare, D.A. & Nkpubre, D.O. & Oni, A.O. & Falana, A. & Waheed, M.A. & Bamiro, O.A., 2010. "Energy and exergy analyses of malt drink production in Nigeria," Energy, Elsevier, vol. 35(12), pages 5336-5346.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:12:p:5336-5346
    DOI: 10.1016/j.energy.2010.07.026
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    References listed on IDEAS

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    7. Degerli, Bahar & Nazir, Serap & Sorgüven, Esra & Hitzmann, Bernd & Özilgen, Mustafa, 2015. "Assessment of the energy and exergy efficiencies of farm to fork grain cultivation and bread making processes in Turkey and Germany," Energy, Elsevier, vol. 93(P1), pages 421-434.

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